Uploader.java Source code

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Here is the source code for Uploader.java

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/*
 * Copyright 2010 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Properties;
import java.util.Set;
import java.util.UUID;

import com.amazonaws.AmazonClientException;
import com.amazonaws.AmazonServiceException;
import com.amazonaws.auth.PropertiesCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.AccessControlList;
import com.amazonaws.services.s3.model.GetObjectRequest;
import com.amazonaws.services.s3.model.Grantee;
import com.amazonaws.services.s3.model.GroupGrantee;
import com.amazonaws.services.s3.model.Permission;
import com.amazonaws.services.s3.model.ListObjectsRequest;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.model.Bucket;
import com.amazonaws.services.s3.model.S3Object;
import com.amazonaws.services.s3.model.ObjectListing;
import com.amazonaws.services.s3.model.S3ObjectSummary;

/**
 * This sample demonstrates how to make basic requests to Amazon S3 using the
 * AWS SDK for Java.
 * <p>
 * <b>Prerequisites:</b> You must have a valid Amazon Web Services developer
 * account, and be signed up to use Amazon S3. For more information on Amazon
 * S3, see http://aws.amazon.com/s3.
 * <p>
 * <b>Important:</b> Be sure to fill in your AWS access credentials in the
 * AwsCredentials.properties file before you try to run this sample.
 * http://aws.amazon.com/security-credentials
 */
public class Uploader {

    public static void main(String[] args) throws IOException {
        if (args.length != 2) {
            System.out.println("Usage: bucket_name properties_file");

            System.out.println("Please specify the bucket name and the properties file to process.");
            System.out.println(
                    "The properties file contains the key for S3 as the key and absolute file path as the value.");
            System.exit(0);
        }
        /*
         * Important: Be sure to fill in your AWS access credentials in the
         * AwsCredentials.properties file before you try to run this sample.
         * http://aws.amazon.com/security-credentials
         */
        AmazonS3 s3 = new AmazonS3Client(
                new PropertiesCredentials(Uploader.class.getResourceAsStream("AwsCredentials.properties")));

        String bucketName = args[0];

        System.out.println("===========================================");
        System.out.println("Getting Started with Amazon S3");
        System.out.println("===========================================\n");

        Properties files = new Properties();
        InputStream in = new FileInputStream(new File(args[1]));
        files.load(in);
        in.close();

        Set keys = files.keySet();
        for (Object key : keys) {
            uploadFile(s3, bucketName, (String) key, new File(files.getProperty((String) key)));
        }

    }

    private static void uploadFile(AmazonS3 s3, String bucketName, String key, File file) {
        if (!file.exists()) {
            System.out.println("File does not exist: " + file.getAbsolutePath());
            return;
        }
        /*
         * Upload an object to your bucket - You can easily upload a file to S3,
         * or upload directly an InputStream if you know the length of the data
         * in the stream. You can also specify your own metadata when uploading
         * to S3, which allows you set a variety of options like content-type
         * and content-encoding, plus additional metadata specific to your
         * applications.
         */
        try {
            System.out.println(file.getAbsolutePath() + " ---> " + key + "\n");
            s3.putObject(new PutObjectRequest(bucketName, key, file));
            // Change permissions. Grant all users the read permission.
            AccessControlList acl = s3.getObjectAcl(bucketName, key);
            Permission permission = Permission.Read;
            Grantee grantee = GroupGrantee.AllUsers;
            acl.grantPermission(grantee, permission);
            s3.setObjectAcl(bucketName, key, acl);
        } catch (AmazonServiceException ase) {
            System.out.println("Caught an AmazonServiceException, which means your request made it "
                    + "to Amazon S3, but was rejected with an error response for some reason.");
            System.out.println("Error Message:    " + ase.getMessage());
            System.out.println("HTTP Status Code: " + ase.getStatusCode());
            System.out.println("AWS Error Code:   " + ase.getErrorCode());
            System.out.println("Error Type:       " + ase.getErrorType());
            System.out.println("Request ID:       " + ase.getRequestId());
        } catch (AmazonClientException ace) {
            System.out.println("Caught an AmazonClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with S3, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message: " + ace.getMessage());
        }

    }
}